Depending on the processed material from each drill must be properly sharpened. To verify the correct angle will help a specially prepared square plate of copper or aluminium with a thickness of 1 mm.
To become operational protractor enough to cut it cut, as shown in the picture: a large cutout at an angle of 120 degrees, the other half is 60 degrees and the surviving corner of a square is 90.
Recommend to read
FROM PROTOTYPE TO COPY
First of all, let me ask you a question: can a student-constructor of ship models do with their hands, without the help of a group leader, to create a good copy of a military ship? Most...
THE HORIZONTAL BAR FROM UNDER THE BED
I offer a sketch of the room sports equipment for children 5-8 years: "double" the horizontal bar or uneven parallel bars. The main advantage of the simulator is that it can be...
